[Resolved] Merging WP installs—best method?

So I’m redesigning our company’s homepage, and then our blog, and this is my first larger project using WP without a WP guru to help me. As of now, this is the setup:

• The blog is live at domain.com.
• The home page redesign is live on a development server.

And where I need things to get are:

• The blog is live at domain.com/blog
• The home page is live at domain.com, with correct links to entries, which now would live at domain.com/blog.

Is the best way for me to do this to move the entire blog WP install to a subdomain and have two instances? To simply do an export/import and add the requisite templates and CSS from the old WP instance to the new WP instance?

I’m sorry, I do mean subdirectory. And yes, I need to get domain.com to domain.com/blog, but is the simplest way to do this to move the entire install? Should I just transpose everything from the current domain.com to the new domain.com/blog?

All right, I seem to have hit another brick wall. So I’ve got the previous blog successfully moved to domain.com/blog and the new site at domain.com.

I think I might have been unclear about something, though.

For the time being, I’m looking to allow people to continue posting and blogging at domain.com/blog and syndicating that to domain.com.

Since there are two separate WP installs, it doesn’t seem like I could successfully run query_posts from one install to another. I don’t know how to generate these results. Will I simply have to parse them out using PHP and XML?